Year	Number
2004-01-01	347
2005-01-01	369
2006-01-01	411
2007-01-01	440
2008-01-01	485
2009-01-01	512
2010-01-01	580
2011-01-01	597
2012-01-01	628
2013-01-01	657
2014-01-01	706
2015-01-01	744